학술논문
Molecular adaptation of an H7N3 wild duck influenza virus following experimental multiple passages in quail and turkey.
Document Type
Academic Journal
Author
Giannecchini S; Virology Unit, Department of Public Health, University of Florence, I-50134 Florence, Italy. simone.giannecchini@unifi.it; Clausi V; Di Trani L; Falcone E; Terregino C; Toffan A; Cilloni F; Matrosovich M; Gambaryan AS; Bovin NV; Delogu M; Capua I; Donatelli I; Azzi A
Source
Publisher: Academic Press Country of Publication: United States NLM ID: 0110674 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1096-0341 (Electronic) Linking ISSN: 00426822 NLM ISO Abbreviation: Virology Subsets: MEDLINE
Subject
Language
English
Abstract
To investigate the molecular adaptation of influenza viruses during natural interspecies transmission, we performed a phenotypic and genotypic analysis of a low-pathogenic duck H7N3 influenza virus after experimental passages in turkey and quail. Results obtained showed differences in the HA receptor-binding and in NA enzyme activities in viruses recovered after passages in quail, compared to those obtained from passages in turkey. Sequencing of the HA, NA and genes of internal proteins of the viruses obtained from quail and turkey, identified several amino acid substitutions in comparison with the progenitor virus. Of note, in the quail-adapted viruses the emergence of a 23-amino acid deletion in the stalk of the NA and the introduction of a glycosylation site in the HA were a reminiscence of changes typically observed in nature confirming a potential role of the quail in the adaptation of wild birds viruses to domestic poultry.
(Copyright © 2010 Elsevier Inc. All rights reserved.)
(Copyright © 2010 Elsevier Inc. All rights reserved.)